3 children. He co-runs Madison
Gurkha BV, a Dutch Security and Open
Source consulting firm. He graduated
in Discrete Mathematics at Eindhoven
University of Technology and started
working as software developer on
medical systems, OCR equipment and
numerical controls. In 1995 he joined Philips Electronics to
work on Internet security. Among others, he has been in
charge with development and operations of the Philips
firewalls. He is co-founder of the Eindhoven Digital City and
Internet Access Eindhoven. Furthermore, he was security
officer of FreeBSD and part of the FreeBSD core team. In his
precious spare time he tries to play the piano and recently he
has discovered sports climbing.